Possibly:
Salt, William, Private, 45503, 2nd Battalion, Nottinghamshire and Derbyshire Regiment
Born Derby
Enlisted Derby
Resided Etwall, Derbyshire
Killed in action 1st July 1917 aged 25
Buried in Loos British Cemetery, III, C, 16

1911 Census
A general printer's clerk
Son of Alfred, a police pensioner, and Marion Salt, of Mackworth, Derbyshire